Energy exists in many forms and can be changed from one form to another (transformed) as it moves through a system.
*Energy can be found in moving objects, light, sound, and heat.
*Light from the sun is an important source of energy for living and nonliving systems and some source of energy is needed for all organisms to stay alive and grow.
*Vibrating objects make sound and sound can make things vibrate; the bigger the vibration, the louder the sound and the faster the vibration the higher the perceived pitch.
*To have a sound you need to have a source, a medium, and a receiver.
*Moving objects in contact with each other produce heat, and electrical, mechanical, and living things often produce heat.
*When warmer things are put with cooler things, the warmer things get cooler and the cooler things get warmer until they are all at the same temperature.
*Electric circuits may produce or use light, heat, sound and magnetic energy.
*Electric circuits require a closed pathway through which an electric current can pass.
*Materials have different properties. Some materials transfer heat more rapidly than others or some materials conduct electricity better than others.
Energy exists in many forms and can be changed from one form to another (transformed) as it moves through a system.
*Energy can be found in moving objects, light, sound, and heat.*Light from the sun is an important source of energy for living and nonliving systems and some source of energy is needed for all organisms to stay alive and grow.
*Vibrating objects make sound and sound can make things vibrate; the bigger the vibration, the louder the sound and the faster the vibration the higher the perceived pitch.
*To have a sound you need to have a source, a medium, and a receiver.
*Moving objects in contact with each other produce heat, and electrical, mechanical, and living things often produce heat.
*When warmer things are put with cooler things, the warmer things get cooler and the cooler things get warmer until they are all at the same temperature.
*Electric circuits may produce or use light, heat, sound and magnetic energy.
*Electric circuits require a closed pathway through which an electric current can pass.
*Materials have different properties. Some materials transfer heat more rapidly than others or some materials conduct electricity better than others.
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